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Application filed by Biodiesel Australia LtdfiledCriticalBiodiesel Australia Ltd
Priority to MYPI20024430priorityCriticalpatent/MY134905A/en
Publication of MY134905ApublicationCriticalpatent/MY134905A/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
A METHOD FOR PRODUCTION OF ALKYL ESTERS FROM A MIXTURE OF GLYCERIDES AND FREE FATTY ACIDS, ORIGINATING PRIMARILY FROM GREASE TRAP WASTE, IS PROVIDED.@THE MIXTURE IS FIRST SOLVATED IN A LOW BOILING POINT ALCOHOL AND THEN THE PH OF THE SOLUTION IS ADJUSTED TO ABOUT 1 TO 2 BY ADDITION OF AN ACID TO EFFECT ACID-CATALYSED ALKYL ESTERIFICATION. THE ACIDIC SOLUTION IS THEN TREATED WITH A CONCENTRATED ALKOXIDE SOLUTION TO RAISE THE PH OF THE SOLUTION TO ABOUT PH12 TO EFFECT BASE-CATALYSED TRANSESTERIFICATION OF GLYCERIDES CONTAINED IN THE MIXTURE. THE RESULTING SOLUTION IS THEN TREATED WITH AN ACID TO DECREASE THE PH OF THE SOLUTION TO ABOUT 2 TO EFFECT ACID-CATALYSED ESTERIFICATION OF RESIDUAL SAPONIFIED BY-PRODUCTS.@THE ALCOHOL SOLVENT IS REMOVED BY DISTILLATION OR OTHER SUITABLE TECHNIQUE AND THE RESULTING ALKYL ESTERS ARE SEPARATED FROM ANY REMAINING RESIDUES AND NEUTRALISED OF RESIDUAL ACIDS.
MYPI200244302002-11-272002-11-27Method for production of alkyl esters
MY134905A
(en)
Transesterification and esterification of fatty acids and triglycerides by dispersion and dispersion method for the production of fatty acid methylesters
Multi-stage method for producing fatty acid alkyl esters from fatty acids and aliphatic alcohols using esterases in the first step and chemical catalysts in another step